chemkor schedule 80 fittings - Fabco Plastics Wholesale Limited

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INSTADUCT® PVC VENTILATION DUCT PIPE
FABCO Plastics makes the design, assembly and installation of
Industrial Fume Exhaust systems easier with new, seamless,
moulded, quick connecting, belled-end, rigid PVC INSTADUCT
Fittings. Now, for the fi rst time, FABCO INSTADUCT fi ttings
allow ventilation systems, up to 24” in diameter to be assembled
by Solvent Welding, substantially reducing installation time and
the associated costs. FABCO’s new INSTADUCT Fittings from
3” to 24” in diameter are machine moulded, onepiece construction,
with elbows being smooth fl owing thus reducing turbulence
and static pressure.
INSTADUCT fi ttings are extremely robust and sturdy, yet lightweight
and easy to handle in the shop or on the job-site. Manufactured
of Type I Grade I PVC, FABCO’s INSTADUCT
Fittings are corrosion resistant and are capable of withstanding
temperatures up to 140°F. For special applications involving
higher temperatures with abrasive airborne particulate mixed with
noxious fumes, FABCO INSTADUCT can also be moulded using
Polypropylene. Applications requiring a fi re retardant ventilation
system can be designed employing FABCO INSTADUCT
moulded from Fire Retardant Polypropylene.
FABCO INSTADUCT fi ttings are the ideal foundation for a well
designed and well installed ventilation system. To compliment
the moulded, one-piece INSTADUCT fi ttings, FABCO also offers
a full range of Custom Fabricated fi ttings.. Ducting systems
above 24” in diameter will also employ fabricated fi ttings, manufactured
in our modern Thermoplastic Fabrication facility, employing
the most up-to-date and effi cient manufacturing methods.
With over 25 years experience in Custom Plastics Engineering
and Fabrication, FABCO offers the INSTADUCT System, our
latest innovation and a part of our Overall Commitment to supply
industry with systems of Peerless Quality and Design.
FABCO’s 66,000 square foot Engineering and Manufacturing
Complex is located in Canada. For more detailed information,
please contact our Engineering and Fabrication Sales Division.
Distributors welcomed.
I. GENERAL APPLICATION
This section is intended to present only a broad introductory discussion
of the general properties of PVC and some of the factors
which should be considered in use in air handling systems. It is
recommended that for additional information relative to specifi c
applications, that FABCO be contacted.
PVC fi nds its widest application in air handling systems where it
is used to control corrosion in exhaust systems that convey acidic
or caustic fumes resulting from the use of chemical solutions.
In addition, INSTADUCT can be used to provide push air. PVC
is particularly suitable where wide variations in chemical con-
centrations, such as in the metal fi nishing trade, will occur. The
material also provides a smooth, hard surface suitable for wash
down or water spray, for the removal of contaminants in the duct
system. These characteristics combined with its general malleability,
make PVC ideally suited for many air pollution control
systems.
Because of its optimal physical properties, chemical resistance
and relatively low cost, PVC has obtained wide acceptance for
use in corrosive fume exhaust systems. Examples of industrial
processes requiring source ventilation of fumes are metal cleaning,
pickling, plating, halogen gas purging and etching. Other
ventilation applications utilizing thermoplastics are fume hoods
in research laboratories and education institutions, and exhaust
ventilating systems in high humidity areas such as indoor swimming
pools.
In general, the selection of PVC will provide wider corrosion
resistance than metal. Proper engineering design and use of an acceptable
plastic for the particular environment will result in satisfactory
performance. Care should be taken to avoid using PVC in
the presence of ketones, chlorinated hydrocarbons and aromatic
solvents.The upper temperature limit is 140°F (approx.). Most
of the diffi culty experienced with failures, resulted from inadequately
constructed units due to a lack of suffi cient engineering
design data. When proper consideration is given to the corrosive
environment, failures are rarely associated with the incompatibility
of PVC with the materials being exhausted.
POLYVINYL CHLORIDE (PVC)
Whenever the terms PVC resins and PVC compounds are used,
they are generally understood to refer to materials made from one
of the following:
a) poly vinyl chloride
b) chlorinated poly vinyl chloride
c) vinyl chloride copolymers
The resin portion of compounds should contain at least 80 percent
vinyl chloride according to ASTM D-1784-81. The compounding
ingredients may consist of lubricants, stabilizers, non-poly (vinyl
chloride) resin modifi ers, and pigments essential for processing,
property control and colouring.
PVC has the ability to be compounded for a wide range of applications.
Use of PVC in air ventilating systems however, is
primarily limited to the rigid material. This material in addition
to being used for duct, is also used for structures such as hoods,
exhaust fans, and fume scrubbers. Other products, such as sinks,
have become standard FABCO items.
PVC Solvent Cements - these cements are compounded with
PVC resins or copolymers, a solvent, and an evaporation retar-